我有两个存储过程，第一个参数带有静态，并且运行良好
但是当我使用动态参数时，它给了我一个错误未声明的变量:limitvar
1/程序
`DELIMITER $$
DROP PROCEDURE IF EXISTS `gestprospects`.`recClientsFiltre` $$
CREATE PROCEDURE `recClientsFiltre`(IN params text, in limitvar int , in offsetvar int )
BEGIN
SET @query := concat(concat("SELECT ... WHERE CONCAT(clients.id,'-') in (",params),") limit 10,10");
PREPARE stmt FROM @query ;
EXECUTE stmt ;
DEALLOCATE PREPARE stmt;
END $$
DELIMITER ;`
2/程序
DELIMITER $$
DROP PROCEDURE IF EXISTS `gestprospects`.`recClientsFiltre` $$
CREATE PROCEDURE `recClientsFiltre`(IN params text, in limitvar int , in offsetvar int )
BEGIN
SET @query := concat(concat("SELECT ... WHERE CONCAT(clients.id,'-') in (",params),") limit limitvar,offsetvar");
PREPARE stmt FROM @query ;
EXECUTE stmt ;
DEALLOCATE PREPARE stmt;
END $$
DELIMITER ;
谢谢您的回复
最佳答案
您在动态查询中包含了文字字符串 limitvar 和 offsetvar，而您希望包含它们的值。
@query := CONCAT(
"SELECT ... WHERE CONCAT(clients.id,'-') IN (", params,")",
" LIMIT ", limitvar, ", ", offsetvar);
注意如何 concatenate several strings在一次调用 CONCAT() 中；
关于MYSQL : Undeclared variable，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/24141814/